FX2 & VMware Live Migrations?

Has anyone heard of issues with certain NIC driver/firmware versions for FC640's in regards to doing VMware live migrations to the FX2?  One of the sleds in the chassis was working just fine but now we can only do cold VM migrations where the other 3 sleds are OK.  Just making sure that there's no compatibility issues between ESX 6.5 and the network driver/firmware that we're currently running (driver: 2.713.60.v60.1, firmware: FFV 14.07.06).